# US 12,006,456 B2 · Adhesive composition, adhesion film comprising same, backplate film comprising adhesion film, and plastic organic light-emitting display comprising adhesion film > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,006,456 B2 - Document ID: US12006456B2 - Status: Granted - Kind: B2 - Application number: 17/259,417 - Filed: 2019-07-29 - Published: 2021-08-19 - Granted: 2024-06-11 - Earliest claimed: 2018-07-27 - Assignees: LG Chem, Ltd. - Applicants: LG Chem, Ltd. - Inventors: Hui Je Lee; Yoonkyung Kwon; Byungsu Park; Seongwook Kang; Sanghun Han - Web page: https://patentgrep.com/patent/US12006456B2 ## CPC - C09J 7/385: {Acrylic polymers} - C08F 230/08: containing silicon - C08G 77/14: containing silicon bound to oxygen-containing groups - C08G 77/20: containing silicon bound to unsaturated aliphatic groups - C08L 33/08: Homopolymers or copolymers of acrylic acid esters - C08L 51/085: {on to polysiloxanes} - C09J 7/20: characterised by their carriers - C09J 7/40: characterised by release liners - C09J 133/066: {containing -OH groups} - C09J 133/08: Homopolymers or copolymers of acrylic acid esters - C09J 133/10: Homopolymers or copolymers of methacrylic acid esters - C09J 133/14: of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen - C09J 183/06: containing silicon bound to oxygen-containing groups (C09J183/12 takes precedence) - H10K 77/111: {Flexible substrates} - H10P 72/7402: {Wafer tapes, e.g. grinding or dicing support tapes} - C09J 2203/318: for the production of liquid crystal displays - C09J 2301/312: parameters being the characterizing feature - C09J 2483/00: Presence of polysiloxane - H10K 2102/311: {Flexible OLED} - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H) - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - H10P: GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10 - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract An adhesive composition, an adhesive film comprising the same, a backplate film comprising the adhesive film, and a plastic organic light emitting display comprising the adhesive film are provided. The adhesive composition includes a (meth)acrylate-based resin, and a polymer having a melting temperature (Tm) of 53° C. or higher, wherein the polymer is a copolymer of a monofunctional polysiloxane and two or more types of monomers. ## Claims ### Claim 1 An adhesive composition comprising: a (meth)acrylate-based resin; and a polymer having a melting temperature (Tm) of 53° C. or higher, wherein the (meth)acrylate-based resin comprises 50 parts by weight to 70 parts by weight of an alkyl acrylate, 5 parts by weight to 40 parts by weight of an alkyl methacrylate, 0.1 parts by weight to 10 parts by weight of a nitrogen-containing monomer, and 1 part by weight to 30 parts by weight of a hydroxyalkyl acrylate, wherein the polymer is a copolymer of a monofunctional polysiloxane and two or more monomers, wherein the monofunctional polysiloxane is included in an amount of greater than or equal to 10 parts by weight and less than or equal to 40 parts by weight, and the two or more monomers are included in a combined amount of greater than or equal to 60 parts by weight and less than or equal to 90 parts by weight, based on 100 parts by weight of the polymer, wherein the polymer is included in 1 part by weight to 10 parts by weight, based on 100 parts by weight of the (meth)acrylate-based resin, and wherein the two or more monomers are each independently represented by Chemical Formula 1: wherein, in Chemical Formula 1, X is N or O; R1 is hydrogen or a methyl group; and n is an integer of 16 to 24. ### Claim 2 (depends on 1) The adhesive composition of claim 1, wherein the two or more monomers represented by Chemical Formula 1 are each independently stearyl acrylate (STA), stearyl methacrylate (STMA), hexadecyl acrylate (HDA), behenyl acrylate (BHA) or behenyl methacrylate (BHMA). ### Claim 3 (depends on 1) The adhesive composition of claim 1, further comprising one or more of a solvent, a dispersant, a photoinitiator, a thermal initiator or a tackifier. ### Claim 4 (depends on 1) An adhesive film comprising: a base film; and an adhesive sheet comprising the adhesive composition of claim 1 or a cured material thereof provided on a surface of the base film. ### Claim 5 (depends on 4) The adhesive film of claim 4, further comprising a release film on a surface of the adhesive sheet, which is opposite to the surface in contact with the base film. ### Claim 6 (depends on 4) The adhesive film of claim 4, wherein the adhesive sheet has an initial adhesive strength after leaving unattended for 2 hours at 23° C. after bonding a surface opposite to the surface in contact with the base film with stainless steel (SUS304 substrate) of 50 gf/inch or less, and a late adhesive strength after heat treating for 20 minutes at 60° C. of 500 gf/inch or greater. ### Claim 7 (depends on 6) The adhesive film of claim 6, wherein the late adhesive strength/the initial adhesive strength is greater than or equal to 10 and less than or equal to 120. ### Claim 8 (depends on 4) The adhesive film of claim 4, wherein the adhesive sheet has a thickness of greater than or equal to 3 μm and less than or equal to 100 μm. ### Claim 9 (depends on 4) The adhesive film of claim 4, wherein the adhesive film has a thickness of greater than or equal to 50 μm and less than or equal to 300 μm. ### Claim 10 (depends on 4) A backplate film comprising: the adhesive film of claim 4; and a protective film provided on the base film of the adhesive film. ### Claim 11 (depends on 4) A plastic organic light emitting display comprising: the adhesive film of claim 4; a plastic substrate provided on the adhesive sheet of the adhesive film; and an organic light emitting layer provided on a surface of the plastic substrate, which is opposite to the surface in contact with the adhesive film. ### Claim 12 (depends on 11) The plastic organic light emitting display of claim 11, further comprising a protective film provided on the base film of the adhesive film.